Meh. I have run spacers for years, as a DD and a trail rig only. As with ALL mods, they just take some maintenence to be safe and trustworthy. Those that say they are dangerous and they would never run them, have read a lot of hype on the interweb. I would MUCH rather run a set of quality aluminum spacers and aluminum wheels than a cheap set of POS $60 steelies. Soft 8s are some of the worst rims I have ever seen firsthand.
You can find them on the web all over the place, but don't go as cheap as possible. Get a set of solid 1 piece billit aluminum spacers, torque them to spec with a drop of red Locktite, and check them periodically.